字段 _________ 需要一个找不到的 _________ 类型的 bean [关闭]

Question

关闭。 这个问题需要细节或清晰。 它目前不接受答案。

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1 小时前关闭。

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在 intellij 社区版中工作。 我该如何解决这个错误。 我已经尝试了在stackoverflow上能找到的所有东西

安慰

C:\Users\dell\.jdks\openjdk-17.0.2\bin\java.exe "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\lib\idea_rt.jar=60395:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.1\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\dell\OneDrive\Desktop\dailyWagers\target\classes;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-data-jpa\2.6.3\spring-boot-starter-data-jpa-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-aop\2.6.3\spring-boot-starter-aop-2.6.3.jar;C:\Users\dell\.m2\repository\org\aspectj\aspectjweaver\1.9.7\aspectjweaver-1.9.7.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-jdbc\2.6.3\spring-boot-starter-jdbc-2.6.3.jar;C:\Users\dell\.m2\repository\com\zaxxer\HikariCP\4.0.3\HikariCP-4.0.3.jar;C:\Users\dell\.m2\repository\org\springframework\spring-jdbc\5.3.15\spring-jdbc-5.3.15.jar;C:\Users\dell\.m2\repository\jakarta\transaction\jakarta.transaction-api\1.3.3\jakarta.transaction-api-1.3.3.jar;C:\Users\dell\.m2\repository\jakarta\persistence\jakarta.persistence-api\2.2.3\jakarta.persistence-api-2.2.3.jar;C:\Users\dell\.m2\repository\org\hibernate\validator\hibernate-validator\6.2.0.Final\hibernate-validator-6.2.0.Final.jar;C:\Users\dell\.m2\repository\jakarta\validation\jakarta.validation-api\2.0.2\jakarta.validation-api-2.0.2.jar;C:\Users\dell\.m2\repository\org\jboss\logging\jboss-logging\3.4.3.Final\jboss-logging-3.4.3.Final.jar;C:\Users\dell\.m2\repository\com\fasterxml\classmate\1.5.1\classmate-1.5.1.jar;C:\Users\dell\.m2\repository\org\springframework\data\spring-data-jpa\2.6.1\spring-data-jpa-2.6.1.jar;C:\Users\dell\.m2\repository\org\springframework\data\spring-data-commons\2.6.1\spring-data-commons-2.6.1.jar;C:\Users\dell\.m2\repository\org\springframework\spring-orm\5.3.15\spring-orm-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\spring-context\5.3.15\spring-context-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\spring-tx\5.3.15\spring-tx-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\spring-beans\5.3.15\spring-beans-5.3.15.jar;C:\Users\dell\.m2\repository\org\slf4j\slf4j-api\1.7.33\slf4j-api-1.7.33.jar;C:\Users\dell\.m2\repository\org\springframework\spring-aspects\5.3.15\spring-aspects-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-security\2.6.3\spring-boot-starter-security-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter\2.6.3\spring-boot-starter-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot\2.6.3\spring-boot-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.6.3\spring-boot-autoconfigure-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.6.3\spring-boot-starter-logging-2.6.3.jar;C:\Users\dell\.m2\repository\ch\qos\logback\logback-classic\1.2.10\logback-classic-1.2.10.jar;C:\Users\dell\.m2\repository\ch\qos\logback\logback-core\1.2.10\logback-core-1.2.10.jar;C:\Users\dell\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.17.1\log4j-to-slf4j-2.17.1.jar;C:\Users\dell\.m2\repository\org\apache\logging\log4j\log4j-api\2.17.1\log4j-api-2.17.1.jar;C:\Users\dell\.m2\repository\org\slf4j\jul-to-slf4j\1.7.33\jul-to-slf4j-1.7.33.jar;C:\Users\dell\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\dell\.m2\repository\org\yaml\snakeyaml\1.29\snakeyaml-1.29.jar;C:\Users\dell\.m2\repository\org\springframework\spring-aop\5.3.15\spring-aop-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\security\spring-security-config\5.6.1\spring-security-config-5.6.1.jar;C:\Users\dell\.m2\repository\org\springframework\security\spring-security-web\5.6.1\spring-security-web-5.6.1.jar;C:\Users\dell\.m2\repository\org\springframework\spring-expression\5.3.15\spring-expression-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.6.3\spring-boot-starter-web-2.6.3.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.6.3\spring-boot-starter-json-2.6.3.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.13.1\jackson-databind-2.13.1.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.13.1\jackson-annotations-2.13.1.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.13.1\jackson-core-2.13.1.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.1\jackson-datatype-jdk8-2.13.1.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.1\jackson-datatype-jsr310-2.13.1.jar;C:\Users\dell\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.13.1\jackson-module-parameter-names-2.13.1.jar;C:\Users\dell\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.6.3\spring-boot-starter-tomcat-2.6.3.jar;C:\Users\dell\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.56\tomcat-embed-core-9.0.56.jar;C:\Users\dell\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.56\tomcat-embed-el-9.0.56.jar;C:\Users\dell\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.56\tomcat-embed-websocket-9.0.56.jar;C:\Users\dell\.m2\repository\org\springframework\spring-web\5.3.15\spring-web-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\spring-webmvc\5.3.15\spring-webmvc-5.3.15.jar;C:\Users\dell\.m2\repository\mysql\mysql-connector-java\8.0.28\mysql-connector-java-8.0.28.jar;C:\Users\dell\.m2\repository\org\projectlombok\lombok\1.18.22\lombok-1.18.22.jar;C:\Users\dell\.m2\repository\org\springframework\spring-core\5.3.15\spring-core-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\spring-jcl\5.3.15\spring-jcl-5.3.15.jar;C:\Users\dell\.m2\repository\org\springframework\security\spring-security-core\5.6.1\spring-security-core-5.6.1.jar;C:\Users\dell\.m2\repository\org\springframework\security\spring-security-crypto\5.6.1\spring-security-crypto-5.6.1.jar com.burrows.dailyWagers.DailyWagersApplication

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.6.3)

2022-02-04 23:09:16.239  INFO 1328 --- [           main] c.b.dailyWagers.DailyWagersApplication   : Starting DailyWagersApplication using Java 17.0.2 on DESKTOP-UNKQR00 with PID 1328 (C:\Users\dell\OneDrive\Desktop\dailyWagers\target\classes started by dell in C:\Users\dell\OneDrive\Desktop\dailyWagers)
2022-02-04 23:09:16.246  INFO 1328 --- [           main] c.b.dailyWagers.DailyWagersApplication   : No active profile set, falling back to default profiles: default
2022-02-04 23:09:19.421  INFO 1328 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2022-02-04 23:09:19.586  INFO 1328 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 114 ms. Found 1 JPA repository interfaces.
2022-02-04 23:09:21.367  INFO 1328 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8081 (http)
2022-02-04 23:09:21.408  INFO 1328 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2022-02-04 23:09:21.409  INFO 1328 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.56]
2022-02-04 23:09:21.621  INFO 1328 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2022-02-04 23:09:21.622  INFO 1328 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 5248 ms
2022-02-04 23:09:21.765  WARN 1328 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'controller': Unsatisfied dependency expressed through field 'workerService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.burrows.dailyWagers.service.WorkerService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
2022-02-04 23:09:21.771  INFO 1328 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2022-02-04 23:09:21.818  INFO 1328 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-02-04 23:09:21.881 ERROR 1328 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Field workerService in com.burrows.dailyWagers.controller.Controller required a bean of type 'com.burrows.dailyWagers.service.WorkerService' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'com.burrows.dailyWagers.service.WorkerService' in your configuration.


Process finished with exit code 1

Controller.java

package com.burrows.dailyWagers.controller;

import com.burrows.dailyWagers.model.Worker;
import com.burrows.dailyWagers.service.WorkerService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/workers")
public class Controller {

    @Autowired
    private WorkerService workerService;

    @GetMapping("/{workerType}")
    public List<Worker> getWorkers(@PathVariable String workerType){
        return this.workerService.getWorkers(workerType);
    }

    @GetMapping("/{id}")
    public Worker getWorker(@PathVariable Long id){
        return (Worker) this.workerService.getWorkers(String.valueOf(id));
    }

    @PostMapping("/{worker}")
    public void postWorker(@PathVariable Worker worker){
        this.workerService.postWorker(worker);
    }

    @PutMapping("/{worker}")
    public void updateWorker(@PathVariable Worker worker){
        this.workerService.updateWorker(worker);
    }

    @DeleteMapping("/{id}")
    public ResponseEntity<HttpStatus> deleteWorker(@PathVariable Long id){
        try {
            this.workerService.deleteWorker(id);
            return new ResponseEntity<>(HttpStatus.OK);
        }
        catch(Exception e){
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
}

WorkerService.java

package com.burrows.dailyWagers.service;

import com.burrows.dailyWagers.model.Worker;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public interface WorkerService {
    public List<Worker> getWorkers(String workerType);
    public Worker getWorker(Long id);
    public void postWorker(Worker worker);
    public void deleteWorker(Long id);
    public void updateWorker(Worker worker);
}

WorkerServiceImpl

package com.burrows.dailyWagers.service;

import com.burrows.dailyWagers.model.Worker;
import com.burrows.dailyWagers.repository.WorkerRepository;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

public class WorkerServiceImpl implements WorkerService{
    @Autowired
    private WorkerRepository workerRepository;

    public List<Worker> getWorkers(String workerType) {
        return workerRepository.findAll();
    }

    public Worker getWorker(Long id) {
        return workerRepository.getById(id);
    }

    public void postWorker(Worker worker) {
        workerRepository.save(worker);
    }

    public void deleteWorker(Long id) {
        Worker workerToBeDeleted = workerRepository.getById(id);
        workerRepository.delete(workerToBeDeleted);
    }

    public void updateWorker(Worker worker) {
        workerRepository.save(worker);
    }
}

WorkerRepository.java

package com.burrows.dailyWagers.repository;

import com.burrows.dailyWagers.model.Worker;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface WorkerRepository extends JpaRepository<Worker,Long> {
}

工人.java

package com.burrows.dailyWagers.model;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.format.annotation.DateTimeFormat;

import javax.persistence.*;

import java.time.LocalDate;
import java.util.List;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Builder
public class Worker {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String workerType;
    private String servicesOffered;
    private LocalDate availability;
    private Integer rating;
}

应用程序属性

server.port=8081

#mysql configuration
spring.datasource.url=jdbc:mysql://localhost:3306/maid-app-db
spring.datasource.username=root
spring.datasource.password=5856
spring.datasource.driverClassName=com.mysql.jdbc.Driver

#hibernate configuration
spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.burrows</groupId>
    <artifactId>dailyWagers</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dailyWagers</name>
    <description>daily wagers web application</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

Answer 1

当我是 Spring 框架的初学者时，我遇到了同样的问题。 从WorkerService.java(interface)中删除@Service注释并将此注释放在WorkerServiceImpl.java(class)中，因为这会使服务接口无用。